<?php

namespace Aws\Api\Parser;

use Aws\Api\Service;
use Aws\Api\StructureShape;
use Aws\Result;
use Aws\CommandInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\StreamInterface;

/**
 * @internal Parses query (XML) responses (e.g., EC2, SQS, and many others)
 */
class QueryParser extends AbstractParser {
	use PayloadParserTrait;

	/** @var bool */
	private $honorResultWrapper;

	/**
	 * @param Service $api Service description
	 * @param XmlParser $xmlParser Optional XML parser
	 * @param bool $honorResultWrapper Set to false to disable the peeling
	 *                                      back of result wrappers from the
	 *                                      output structure.
	 */
	public function __construct(
		Service   $api,
		XmlParser $xmlParser = null,
		          $honorResultWrapper = true
	) {
		parent::__construct($api);
		$this->parser = $xmlParser ?: new XmlParser();
		$this->honorResultWrapper = $honorResultWrapper;
	}

	public function __invoke(
		CommandInterface  $command,
		ResponseInterface $response
	) {
		$output = $this->api->getOperation($command->getName())->getOutput();
		$xml = $this->parseXml($response->getBody(), $response);

		if($this->honorResultWrapper && $output['resultWrapper']) {
			$xml = $xml->{$output['resultWrapper']};
		}

		return new Result($this->parser->parse($output, $xml));
	}

	public function parseMemberFromStream(
		StreamInterface $stream,
		StructureShape  $member,
		                $response
	) {
		$xml = $this->parseXml($stream, $response);
		return $this->parser->parse($member, $xml);
	}
}
